56821464 has 48 divisors (see below), whose sum is σ = 175877520. Its totient is φ = 16234560.

The previous prime is 56821433. The next prime is 56821483. The reversal of 56821464 is 46412865.

It is a super-2 number, since 2×56821464² = 6457357542206592, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55867 + ... + 56874.

It is an arithmetic number, because the mean of its divisors is an integer number (3664115).

Almost surely, 2^56821464 is an apocalyptic number.

It is an amenable number.

56821464 is an abundant number, since it is smaller than the sum of its proper divisors (119056056).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56821464 is a wasteful number, since it uses less digits than its factorization.

56821464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112760 (or 112753 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 56821464 is about 7538.0013266117. The cubic root of 56821464 is about 384.4478823526.

The spelling of 56821464 in words is "fifty-six million, eight hundred twenty-one thousand, four hundred sixty-four".